New Features Race inspired brake rotors provide better cooling performance and increased mud deflection in muddy conditions. Newly designed pegs include increased clearance between the mounting bracket and footrest to prevent mud from caking up. Gripper seat has been improved this year by adding projected cross-shaped patterns on the top surface to provide additional grip. New Engine KEIHIN FCR 37 MX Carburetor with bat-wing type air guide plates result in better mid-to-high power output while improving low throttle opening response. Exhaust port is narrowed down on the left side for an increase of mid-to-high power output. Muffler construction revised improving power output throughout the rev range. Clutch judder springs added for a more controllable operation feel. Modified piston profile for increased engine reliability. Hot starter relocated to the right hand side of the handlebar just like Ricky Carmichael’s Championship winning RM-Z450. New Chassis Brackets are added to the side frame pipes and tank rails for increased balance rigidity. Lower bridge pipes reduced in size resulting in improved shock-absorption feel while maintaining ample strength. Showa cartridge-style front fork with 47mm inner tube, plus 22 -way compression damping and 11.8 inches of wheel travel. Sections within the fork were modified to reduce weight and improve shock absorption. Showa rear shock absorber with a newly designed damper case and modified internal structure for a better controlled feel and increased bottoming resistance. Gold-colored chain and axle blocks give a full factory look. Engine Features Compact 249cc, 4-stroke, liquid-cooled, DOHC, 4-valve engine - designed for maximum performance Advanced 4-valve cylinder head design with narrow included valve angle and titanium valves, plus new pentroof combustion chamber design for improved combustion efficiency SCEM composite-plated aluminum alloy cylinder for increased durability, optimum engine cooling and operating temperature Strong, reinforced airbox designed for durability and secure intake seal Automatic decompression system for easy kick starting Semi-dry-sump lubrication system features separate oil chambers for the transmission and crankshaft using the transmission as the oil sump, allowing low crankshaft placement, reduced engine height and a low center of gravity AC-CDI ignition system with two ignition maps automatically increases engine idle speed to reduce engine brake effect - ignition timing and rev limiter set for optimum high rpm and over-rev performance Chassis Features Twin spar aluminum alloy frame based on the championship winning RM-Z450 featuring a forged aluminum headpipe and body frame Renthal tapered aluminum handlebars with Renthal-labeled handlebar pad for reduced vibration and improved rider feel On-the-fly clutch lever adjuster mounted to the clutch lever perch for rider convenience

Specs

Engine:	249cc, two-stroke, single-cylinder, liquid cooled, AETC, piston reed
Bore Stroke:	77.0 x 53.6mm
Compression Ratio:	13.4:1
Fuel System:	KeihinT FCR37MX
Lubrication:	Semi-dry sump
Ignition:	Digital AC-CDI
Transmission:	5-speed
Final Drive:	#520 Drive
Overall Length:	2165mm (85.2 in.)
Overall Width:	830mm (32.7 in.)
Overall Height:	1260mm (49.6 in.)
Seat Height:	955mm (37.6 in.)
Ground Clearance:	350mm (13.8 in.)
Wheelbase:	1465mm (57.9 in.)
Dry Weight:	92kg (203 lbs.)
Suspension Front:	Telescopic, cartridge-type, 16 compression & rebound settings, 11.8 inches, 300mm of wheel travel
Suspension Rear:	Link-type, spring preload fully-adjustable, 16 compression & rebound settings, 310 of wheel travel
Brakes Front:	Single hydraulic disc
Brakes Rear:	Single hydraulic disc
Tires Front:	90/100-21
Tires Rear:	100/90-19
Fuel Tank Capacity:	7.5 liter (2.0 gal.)
Color:	Yellow